/* $NetBSD: uxrcom.c,v 1.2 2020/07/09 13:43:04 simonb Exp $ */ /* $OpenBSD: uxrcom.c,v 1.1 2019/03/27 22:08:51 kettenis Exp $ */ /* * Copyright (c) 1998, 2020 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Lennart Augustsson (lennart@augustsson.net) at * Carlstedt Research & Technology and Simon Burge. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (c) 2006 Jonathan Gray * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include __KERNEL_RCSID(0, "$NetBSD: uxrcom.c,v 1.2 2020/07/09 13:43:04 simonb Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define UXRCOMBUFSZ 64 /* XXX uxrcomreg.h */ #define XR_SET_REG 0 #define XR_GET_REGN 1 #define XR_FLOW_CONTROL 0x000c #define XR_FLOW_CONTROL_ON 1 #define XR_FLOW_CONTROL_OFF 0 #define XR_TX_BREAK 0x0014 #define XR_TX_BREAK_ON 1 #define XR_TX_BREAK_OFF 0 #define XR_GPIO_SET 0x001d #define XR_GPIO_CLEAR 0x001e #define XR_GPIO3 (1 << 3) #define XR_GPIO5 (1 << 5) /* for XR_SET_REG/XR_GET_REGN specify which uart block to use */ #define XR_UART_BLOCK(sc) (((sc)->sc_ctl_iface_no / 2) << NBBY) #ifdef UXRCOM_DEBUG #define DPRINTF(x) if (uxrcomdebug) printf x int uxrcomdebug = 0; #else #define DPRINTF(x) #endif static void uxrcom_set(void *, int, int, int); static int uxrcom_param(void *, int, struct termios *); static void uxrcom_break(void *, int, int); static const struct ucom_methods uxrcom_methods = { .ucom_get_status = umodem_get_status, .ucom_set = uxrcom_set, .ucom_param = uxrcom_param, .ucom_ioctl = NULL, /* TODO */ .ucom_open = umodem_open, .ucom_close = umodem_close, }; static const struct usb_devno uxrcom_devs[] = { { USB_VENDOR_EXAR, USB_PRODUCT_EXAR_XR21V1410 }, { USB_VENDOR_EXAR, USB_PRODUCT_EXAR_XR21V1412 }, { USB_VENDOR_EXAR, USB_PRODUCT_EXAR_XR21V1414 }, }; #define uxrcom_lookup(v, p) usb_lookup(uxrcom_devs, v, p) static int uxrcom_match(device_t, cfdata_t, void *); static void uxrcom_attach(device_t, device_t, void *); static int uxrcom_detach(device_t, int); CFATTACH_DECL_NEW(uxrcom, sizeof(struct umodem_softc), uxrcom_match, uxrcom_attach, uxrcom_detach, NULL); static int uxrcom_match(device_t parent, cfdata_t match, void *aux) { struct usbif_attach_arg *uiaa = aux; if (uiaa->uiaa_class != UICLASS_CDC || uiaa->uiaa_subclass != UISUBCLASS_ABSTRACT_CONTROL_MODEL || !(uiaa->uiaa_proto == UIPROTO_CDC_NOCLASS || uiaa->uiaa_proto == UIPROTO_CDC_AT)) return UMATCH_NONE; return uxrcom_lookup(uiaa->uiaa_vendor, uiaa->uiaa_product) != NULL ? UMATCH_VENDOR_PRODUCT : UMATCH_NONE; } static void uxrcom_attach(device_t parent, device_t self, void *aux) { struct umodem_softc *sc = device_private(self); struct usbif_attach_arg *uiaa = aux; struct ucom_attach_args ucaa; memset(&ucaa, 0, sizeof(ucaa)); ucaa.ucaa_portno = UCOM_UNK_PORTNO; ucaa.ucaa_methods = &uxrcom_methods; ucaa.ucaa_info = NULL; ucaa.ucaa_ibufsize = UXRCOMBUFSZ; ucaa.ucaa_obufsize = UXRCOMBUFSZ; ucaa.ucaa_ibufsizepad = UXRCOMBUFSZ; if (!pmf_device_register(self, NULL, NULL)) aprint_error_dev(self, "couldn't establish power handler"); umodem_common_attach(self, sc, uiaa, &ucaa); } static int uxrcom_detach(device_t self, int flags) { struct umodem_softc *sc = device_private(self); pmf_device_deregister(self); return umodem_common_detach(sc, flags); } static void uxrcom_set(void *addr, int portno, int reg, int onoff) { struct umodem_softc *sc = addr; usb_device_request_t req; uint16_t index; uint8_t value; if (sc->sc_dying) return; index = onoff ? XR_GPIO_SET : XR_GPIO_CLEAR; switch (reg) { case UCOM_SET_DTR: value = XR_GPIO3; break; case UCOM_SET_RTS: value = XR_GPIO5; break; case UCOM_SET_BREAK: uxrcom_break(sc, portno, onoff); return; default: return; } req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = XR_SET_REG; USETW(req.wValue, value); USETW(req.wIndex, index | XR_UART_BLOCK(sc)); USETW(req.wLength, 0); usbd_do_request(sc->sc_udev, &req, NULL); } static usbd_status uxrcom_set_line_coding(struct umodem_softc *sc, usb_cdc_line_state_t *state) { usb_device_request_t req; usbd_status err; DPRINTF(("%s: rate=%d fmt=%d parity=%d bits=%d\n", __func__, UGETDW(state->dwDTERate), state->bCharFormat, state->bParityType, state->bDataBits)); if (memcmp(state, &sc->sc_line_state, UCDC_LINE_STATE_LENGTH) == 0) { DPRINTF(("%s: already set\n", __func__)); return USBD_NORMAL_COMPLETION; } req.bmRequestType = UT_WRITE_CLASS_INTERFACE; req.bRequest = UCDC_SET_LINE_CODING; USETW(req.wValue, 0); USETW(req.wIndex, sc->sc_ctl_iface_no); USETW(req.wLength, UCDC_LINE_STATE_LENGTH); err = usbd_do_request(sc->sc_udev, &req, state); if (err) { DPRINTF(("%s: failed, err=%u\n", __func__, err)); return err; } sc->sc_line_state = *state; return USBD_NORMAL_COMPLETION; } static int uxrcom_param(void *addr, int portno, struct termios *t) { struct umodem_softc *sc = addr; usb_device_request_t req; usbd_status err; usb_cdc_line_state_t ls; uint8_t flowctrl; if (sc->sc_dying) return EIO; /* slowest supported baud rate is 1200 bps, max is 12 Mbps */ if (t->c_ospeed < 1200 || t->c_ospeed > 12000000) return (EINVAL); USETDW(ls.dwDTERate, t->c_ospeed); if (ISSET(t->c_cflag, CSTOPB)) ls.bCharFormat = UCDC_STOP_BIT_2; else ls.bCharFormat = UCDC_STOP_BIT_1; if (ISSET(t->c_cflag, PARENB)) { if (ISSET(t->c_cflag, PARODD)) ls.bParityType = UCDC_PARITY_ODD; else ls.bParityType = UCDC_PARITY_EVEN; } else ls.bParityType = UCDC_PARITY_NONE; switch (ISSET(t->c_cflag, CSIZE)) { case CS5: ls.bDataBits = 5; break; case CS6: ls.bDataBits = 6; break; case CS7: ls.bDataBits = 7; break; case CS8: ls.bDataBits = 8; break; } err = uxrcom_set_line_coding(sc, &ls); if (err) { DPRINTF(("%s: err=%u\n", __func__, err)); return EIO; } if (ISSET(t->c_cflag, CRTSCTS)) { /* rts/cts flow ctl */ flowctrl = XR_FLOW_CONTROL_ON; } else { /* disable flow ctl */ flowctrl = XR_FLOW_CONTROL_OFF; } req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = XR_SET_REG; USETW(req.wValue, flowctrl); USETW(req.wIndex, XR_FLOW_CONTROL | XR_UART_BLOCK(sc)); USETW(req.wLength, 0); usbd_do_request(sc->sc_udev, &req, NULL); return (0); } static void uxrcom_break(void *addr, int portno, int onoff) { struct umodem_softc *sc = addr; usb_device_request_t req; uint8_t brk = onoff ? UCDC_BREAK_ON : UCDC_BREAK_OFF; DPRINTF(("%s: port=%d onoff=%d\n", __func__, portno, onoff)); req.bmRequestType = UT_WRITE_VENDOR_DEVICE; req.bRequest = XR_SET_REG; USETW(req.wValue, brk); USETW(req.wIndex, XR_TX_BREAK | XR_UART_BLOCK(sc)); USETW(req.wLength, 0); (void)usbd_do_request(sc->sc_udev, &req, 0); }